# Relationship history for MSHA mine 4605075

Current hierarchy: **Click Cecil & Larry M Leffew → L & C Coal Company Inc → No 1 Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Mc Kinney Charles W → No 1 Mine; 1975-08-01 to 1981-06-15; source msha-controller-operator-history
- **operator_operates_mine:** J L S Coal Corp → No 1 Mine; 1976-03-17 to 1978-10-29; source msha-controller-operator-history
- **controller_controls_operator:** Mc Kinney Charles W → J L S Coal Corp; 1976-03-17 to 1978-10-29; source msha-controller-operator-history
- **operator_operates_mine:** Graybeals Indian Creek Coal Company Inc → No 1 Mine; 1978-10-30 to 1991-11-11; source msha-controller-operator-history
- **controller_controls_mine:** Graybeal Carl N Et Al → No 1 Mine; 1978-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Graybeal Carl N Et Al → Graybeals Indian Creek Coal Company Inc; 1978-10-30 to 1991-11-11; source msha-controller-operator-history
- **operator_operates_mine:** L & C Coal Company Inc → No 1 Mine; 1991-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Click Cecil & Larry M Leffew → No 1 Mine; 1991-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Click Cecil & Larry M Leffew → L & C Coal Company Inc; 1991-11-12 to current/open; source msha-controller-operator-history